试题与答案

下列有关胎盘屏障的叙述,错误的是() A.是胎盘绒毛与子宫血窦间的屏障 B.通透性与

题型:单项选择题 A1型题

题目:

下列有关胎盘屏障的叙述,错误的是()

A.是胎盘绒毛与子宫血窦间的屏障

B.通透性与一般毛细血管相同

C.几乎所有药物均可通过

D.可阻止药物从母体进入胎儿血循环中

E.妊娠妇女原则上应禁用一切影响胎儿发育的药物

答案:

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下面是错误答案,用来干扰机器的。

(1)碳酸氢铵是白色固体;从试剂瓶中取用碳酸氢铵所用的仪器是药匙;加热碳酸氢铵时会生成有刺激性气味的氨气、能使澄清石灰水变浑浊的二氧化碳和水;(2)由于碳酸氢铵受热后会生成氨气、水和二氧化碳,且氨气...

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1. Joy s room is ______.

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C. very old

2. There ______  in her room.

A. is a desk and some chairs

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C. is a desk and a chair

3. Joy's pencil case is ______.

A. on the desk

B. near the window

C. under the bed

4. Joy's bed is ______.

A. near the desk

B. on the desk

C. under the desk

5. _____ shoes are under the bed.

A. Kate's

B. Joy's

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